Dihydroprylone

  • Benedorm
  • Didropyridine
  • 3,3-Diethyl-2,4-pyridinedione
  • 3,3-Diethyl-2,4(1H,3H)-pyridinedione
  • 3,3-Diethyl-1,2,3,4-tetrahydropyridine-2,4-dione
  • NU-903
Formula
C9H13NO2
Structure
Description
White powder.

Registry Numbers and Inventories.
CAS
77-04-3
EC (EINECS/ELINCS)
201-000-5
RTECS
UT2810530
RTECS class
Drug
UN (DOT)
2811
Merck
12,8179
Beilstein/Gmelin
131564
Beilstein Reference
5-21-10-00086

Properties.
Formula
C9H13NO2
Formula mass
167.20
Melting point, °C
98
Boiling point, °C
187
Solubility in water
Slightly soluble
pKa/pKb
11.71 (pKa)

Hazards and Protection.
Storage
Keep containers tightly closed. Store in a cool, dry area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure effects
   Ingestion
The toxicological properties of this substance have not been fully investigated. May be harmful if swallowed. May cause central nervous system depression.
   Inhalation
The toxicological properties of this substance have not been fully investigated. May cause irritation of the mucous membranes.
   Skin
May cause skin irritation. The toxicological properties of this material have not been fully investigated.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III